Bible Dictionaries
Third-Rail System
Webster's Dictionary
A system in which a third rail is used for carrying the current for operating the motors, the rail being insulated from the ground and the current being taken off by means of contact brushes or other devices.
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Bibliography Information
Webster, Noah. Entry for 'Third-Rail System'. Noah Webster's American Dictionary. https://www.studylight.org/dictionaries/eng/web/t/third-rail-system.html. 1828.